which coilovers for drag racing?

Discussion in 'Non Technical' started by Boost Junkie, May 30, 2011.

  1. Boost Junkie

    Boost Junkie Member

    i've been searching far and wide for drag related suspension for zeds with not much success. i can get 90/10 shocks for the front easy enough but then im stuck with the one setup if i decide to go for a squirt around a circuit every once in a while. so i was wondering, if i get a set of coilovers with separate bump and rebound adjustment like these, http://www.justjap.com/store/product.php?productid=19781&cat=422&page=7 would they work in the same fashion as a 90/10 shock?
     
  2. lidz

    lidz Well-Known Member

    wouldn't those spring rates be to hard for drag? I thought they normally ran softer rates?

    Could always get some HKS Hiper-Drag coilovers.
     
  3. MagicMike

    MagicMike Moderator Staff Member

    It seems that typical soft rear ends don't work too well with zeds. Ask they guys who have run quick times what they used.
     
  4. Boost Junkie

    Boost Junkie Member

    the old school racers and muscle car guys run like 8kg springs in the rear to stop them axle tramping, dunno about the front but surely they wouldn't be softer. i like the price of the 'brand new' BC coilovers too.
     
  5. Tektrader

    Tektrader Z32 Hoe, service me baby

    you need softer suspension for drags. BUT you also have to remove aa fair bit of the anti squat to make the weight transfer properly on launch.

    Removing antisquat involves cutting and rewelding some of the location points for the rear lower control arms.

    NO coilovers are really that good at the drags. Look at a good system of shockers and lighter springs.
     
  6. Chilledpain

    Chilledpain Z Reaper

    You actually WANT the anti squat functionality tho... This has been covered many times already on the forum and elsewhere also...

    As covered here:

    http://www.aus300zx.com/forum/archive/index.php/t-293357.html

    Makes sense after some reading tho...
     
  7. Tektrader

    Tektrader Z32 Hoe, service me baby

    The Z32 has a massive amount of antisquat. Look at the angle of the rear lower control arms.

    I have never seen a Z32 launch properly with stock suspension angles.
     
  8. Boost Junkie

    Boost Junkie Member

    do mean what Black Beast and JP have done to their rear subframe?
    thats pretty extreme. what is it about coilovers that makes them not so great for the strip?
     
  9. Tektrader

    Tektrader Z32 Hoe, service me baby

    yes both of them and myself have modded the subrame to reduce but NOT remove antisquat. If you can get the correct spring rates they could be OK. BUT most reasonable priced coil overs have stupid hard springs.
     
  10. Boost Junkie

    Boost Junkie Member

    ah you too hey. that looks lke a very involved job. for the front, i guess it would be a case of buying different rate springs and changing them over until the right ones are found, but then i suppose you could do the same with stock struts hey.
     
  11. pmack

    pmack Member

    stock suspension

    I know it's not particularly fast , But on my last 11 runs at the Drags , The stock suspension has been able to hold every pass , all have been 1.60-1.68 60 foot times , and Wizards car has been in the 1.5's . That said im not sure how much more they will cop?

    http://www.blacktrack.com.au/gallery/index.php?do=photocart&viewImage=185012

    http://www.blacktrack.com.au/gallery/index.php?do=photocart&viewImage=184908
     

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